package com.ly.web.core.config;

import java.util.ArrayList;
import java.util.List;

import com.ly.common.config.ErpConfig;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import io.swagger.annotations.ApiOperation;
import springfox.documentation.builders.ApiInfoBuilder;
import springfox.documentation.builders.PathSelectors;
import springfox.documentation.builders.RequestHandlerSelectors;
import springfox.documentation.service.ApiInfo;
import springfox.documentation.service.ApiKey;
import springfox.documentation.service.AuthorizationScope;
import springfox.documentation.service.Contact;
import springfox.documentation.service.SecurityReference;
import springfox.documentation.spi.DocumentationType;
import springfox.documentation.spi.service.contexts.SecurityContext;
import springfox.documentation.spring.web.plugins.Docket;
import springfox.documentation.swagger2.annotations.EnableSwagger2;

import javax.annotation.Resource;

/**
 * Swagger2的接口配置
 * @author
 */
@Configuration
@EnableSwagger2
public class SwaggerConfig {
    /**
     * 系统基础配置
     */
    @Resource
    private ErpConfig erpConfig;

    /**
     * 是否开启swagger
     */
    @Value ("${swagger.enabled}")
    private boolean enabled;

    /**
     * 设置请求的统一前缀
     */
    @Value ("${swagger.pathMapping}")
    private String pathMapping;

    /**
     * 创建API
     */
    @Bean
    public Docket createRestApi () {
        return new Docket ( DocumentationType.SWAGGER_2 )
                // 是否启用Swagger
                .enable ( enabled )
                // 用来创建该API的基本信息，展示在文档的页面中（自定义展示的信息）
                .apiInfo ( apiInfo () )
                // 设置哪些接口暴露给Swagger展示
                .select ()
                // 扫描所有有注解的api，用这种方式更灵活
                .apis ( RequestHandlerSelectors.withMethodAnnotation ( ApiOperation.class ) )
                // 扫描指定包中的swagger注解
//                .apis ( RequestHandlerSelectors.basePackage ( "com.ly.web.controller.erp" ) )
                // 扫描所有 .apis(RequestHandlerSelectors.any())
                .apis(RequestHandlerSelectors.any())
                .paths ( PathSelectors.any () )
                .build ()
                /* 设置安全模式，swagger可以设置访问token */
                .securitySchemes ( securitySchemes () )
                .securityContexts ( securityContexts () )
                .pathMapping ( pathMapping );
    }

    /**
     * 安全模式，这里指定token通过Authorization头请求头传递
     */
    private List<ApiKey> securitySchemes () {
        List<ApiKey> apiKeyList = new ArrayList<ApiKey> ();
        apiKeyList.add ( new ApiKey ( "Authorization", "Authorization", "header" ) );
        return apiKeyList;
    }

    /**
     * 安全上下文
     */
    private List<SecurityContext> securityContexts () {
        List<SecurityContext> securityContexts = new ArrayList<> ();
        securityContexts.add (
                SecurityContext.builder ()
                        .securityReferences ( defaultAuth () )
                        .forPaths ( PathSelectors.regex ( "^(?!auth).*$" ) )
                        .build () );
        return securityContexts;
    }

    /**
     * 默认的安全上引用
     */
    private List<SecurityReference> defaultAuth () {
        AuthorizationScope authorizationScope = new AuthorizationScope ( "global", "accessEverything" );
        AuthorizationScope[] authorizationScopes = new AuthorizationScope[1];
        authorizationScopes[0] = authorizationScope;
        List<SecurityReference> securityReferences = new ArrayList<> ();
        securityReferences.add ( new SecurityReference ( "Authorization", authorizationScopes ) );
        return securityReferences;
    }

    /**
     * 添加摘要信息
     */
    private ApiInfo apiInfo () {
        // 用ApiInfoBuilder进行定制
        return new ApiInfoBuilder ()
                // 设置标题
                .title ( "烈阳ERP接口文档" )
                // 作者信息
                .contact ( new Contact ( "闲聊小组", null, null ) )
                // 版本
//                .version("版本号:" + ruoyiConfig.getVersion())
                .build ();
    }
}
